Ext Mic Input Noise Level Check - Sony DCR-PC10 Service Manual

3-7-6.

EXT MIC Input Noise Level Check

Mode Camera mode record
Signal No input signal : Connect the left and
right channel of MIC (I/O board-1 jig)
with GND.
Measurement Point AUDIO VIDEO OUT/
HEADPHONES jack, left and right
channels
Measuring Instrument Audio level meter
Specification Value – 45 dBs or less (IHF-A filter on, 20
kHz low-pass filter on)
Note 1: Set SW1 on I/O board-1 jig to MIC.
Note 2: Impose a 47 k
resistance to the left AUDIO VIDEO
OUT/HEADPHONES jack, and turn the power ON from
OFF.
Check procedure:
Order
1 Confirm that the noise level satisfies the specification
value.
Procedure
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